US3670375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for tenter processing of open width fabric
Assignee: Samcoe Holding Corp
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Filing: 1970-09-01
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Granted: 1972-06-20
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Expires: 1990-09-01
Abstract
Abstract The invention is directed to a fabric tenter apparatus and related method, intended especially for the processing of geometrically distortable fabrics in flat, open width form. The apparatus includes opposing sets of tenter chains for engaging the fabric margins, and the chains are divergently related at the entry end section and arranged in parallel relation along a processing section located downstream of the entry end. Means are provided for overfeeding of the fabric edge margins onto the tenter chains at the entry end. Additionally, as a unique feature of the combination, controllably driven web-supporting elements (e.g., tapes) are provided to support the center portions of the fabric web. These web-supporting elements engage the web commencing at a point upstream of the entry end section and extending well downstream therefrom, usually well into the processing section of the tenter. The supporting elements are driven at a controlled ''''overfeeding'''' or an ''''underfeeding'''' rate, so that the center portions of the fabric continue to be advanced at the controlled rate even after the fabric has been engaged by the slower moving tenter chains. The apparatus and the related process provide for an advantageous degree of control over the geometry of the cross lines of the fabric.
Inventors
- 👤 Eugene Cohn
- 👤 Andrew P Cecere
- 👤 Robert Frezza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:29
CPC Classifications
D; D06; D06C; D06C3/00; D06C2700/00; D06C2700/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
232 words
In a fabric tenter apparatus intended especially for processing geometrically distortable fabrics, and having a fabric distending station with a set of opposed tenter elements at each side of said station and divergently Related to effect widthwise distention of a fabric web; and a processing station on which said opposed tenter elements are arranged in generally parallel relation; the combination which comprises a. a plurality of longitudinally disposed movable web supporting elements disposed between said opposed tenter elements and engageable with the web being carried by said tenter elements across the transverse extent thereof; b. said web supporting elements being arranged to simultaneously controllably advance a fabric web toward said tenter elements and to support said web throughout and terminating at the end of said distending station; c. means for driving said tenter elements at a predetermined speed; d. infeeding means for controllably advancing said fabric web toward and into operative association with the tenter elements of the entry end section of said distending station; e. control means for operating said infeeding means at a speed of advance in excess of the speed of advance of said tenter elements, whereby said fabric web is delivered in controllably overfed engagement with the tenter elements; and f. means for driving said web-supporting elements at the overfeeding speed of said infeeding means, whereby the geometric stability of the fabric is maintained throughout the distending station.
Claim 2
Dependent Claim
232 words
In a fabric tenter apparatus intended especially for processing geometrically distortable fabrics, and having a fabric distending station with a set of opposed tenter elements at each side of said station and divergently Related to effect widthwise distention of a fabric web; and a processing station on which said opposed tenter elements are arranged in generally parallel relation; the combination which comprises a. a plurality of longitudinally disposed movable web supporting elements disposed between said opposed tenter elements and engageable with the web being carried by said tenter elements across the transverse extent thereof; b. said web supporting elements being arranged to simultaneously controllably advance a fabric web toward said tenter elements and to support said web throughout and terminating at the end of said distending station; c. means for driving said tenter elements at a predetermined speed; d. infeeding means for controllably advancing said fabric web toward and into operative association with the tenter elements of the entry end section of said distending station; e. control means for operating said infeeding means at a speed of advance in excess of the speed of advance of said tenter elements, whereby said fabric web is delivered in controllably overfed engagement with the tenter elements; and f. means for driving said web-supporting elements at the overfeeding speed of said infeeding means, whereby the geometric stability of the fabric is maintained throughout the distending station.
Claim 3
Dependent Claim
27 words
The apparatus of claim 1, further characterized by a. said web-supporting elements extending from a point upstream of said distending station to the terminating point downstream thereof.
Claim 4
Dependent Claim
33 words
The apparatus of claim 1, further characterized by a. the tenter elements of said distending station and said processing station at each side, constituting a continuous endless tenter element extending over both stations.
Claim 5
Dependent Claim
32 words
The apparatus of claim 1, wherein the infeeding means comprises by a. a fabric feeding roll, and b. said web-supporting elements comprising tape-like bands trained about and driven by said feeding roll.
Claim 6
Independent Claim
151 words
A method of tenter-processing a geometrically distortable fabric, which comprises a. advancing the fabric in flat, open width form and at a first predetermined rate of advancement, b. engaging the fabric by its edge extremities and advancing said fabric by such edges at a second and slower rate of advancement and in a divergent manner to effect lateral distention of the fabric, c. continuing to advance the edges of the distended fabric substantially at said second rate of advancement and in a substantially parallel disposition, and d. engaging, supporting and advancing a plurality of intermediate portions of the fabric web between margins of the fabric engaged and being advanced throughout the divergent advance and terminating at the end of the divergent advance thereof, e. said intermediate portions being advanced at the first predetermined rate of advancement whereby the geometric stability of the fabric is maintained throughout the area of divergent advance.
Claim 7
Independent Claim
151 words
A method of tenter-processing a geometrically distortable fabric, which comprises a. advancing the fabric in flat, open width form and at a first predetermined rate of advancement, b. engaging the fabric by its edge extremities and advancing said fabric by such edges at a second and slower rate of advancement and in a divergent manner to effect lateral distention of the fabric, c. continuing to advance the edges of the distended fabric substantially at said second rate of advancement and in a substantially parallel disposition, and d. engaging, supporting and advancing a plurality of intermediate portions of the fabric web between margins of the fabric engaged and being advanced throughout the divergent advance and terminating at the end of the divergent advance thereof, e. said intermediate portions being advanced at the first predetermined rate of advancement whereby the geometric stability of the fabric is maintained throughout the area of divergent advance.
Claim 8
Dependent Claim
43 words
The method of claim 5, further characterized by a. the intermediate portions of the fabric being thus engaged, supported and advanced from a point upstream of the point of commencement of divergent advancement of fabric edge margins to the terminating point downstream thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |